Expect to see up to 100 Perseid meteors an hour shooting across the sky on Wednesday night this week.Clear dark skies should create the best conditions for seeing these fragments of the Swift-Tuttle comet which arrive every year when the Earth passes through its debris. Composed of ice and dust, the pieces appear to come from the constellation of Perseus – hence the name Perseid - and they enter Earth's atmosphere at an eye-watering 134,000mph, but are not harmful. The big show will reach...
